261185459034 has 16 divisors (see below), whose sum is σ = 523046698272. Its totient is φ = 86949189648.

The previous prime is 261185459023. The next prime is 261185459083. The reversal of 261185459034 is 430954581162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28152484 + ... + 28161759.

It is an arithmetic number, because the mean of its divisors is an integer number (32690418642).

Almost surely, 2^261185459034 is an apocalyptic number.

261185459034 is an abundant number, since it is smaller than the sum of its proper divisors (261861239238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261185459034 is a wasteful number, since it uses less digits than its factorization.

261185459034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56315021.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 261185459034 in words is "two hundred sixty-one billion, one hundred eighty-five million, four hundred fifty-nine thousand, thirty-four".